Fastening inserting machine



June 15, 1937. F. N. LA CHAPELLE 2,083,568

FASTENING INSERTING MACHINE Filed Dec. 14, 1954 5 Sheets-Sheet l 9 WVEA/TUF 2 qma/vfimnpm ia) June 15, 1937. F. N. LA CHAPELLE FASTENING INSERTING MACHINE Filed Dec. 14, 1954 5 Sheets-Sheet 2 J1me 1937- F. N. LA CHAPELLE FASTENING INSERTING MACHINE Filed Dec. 14, 1934 5 Sheets-Sheet 5 June 15, 937- F. N. LA CHAPELLE 2,083,568

FASTENING INSERTING MACHINE Filed Dec. 14, 1 954 5 Sheets-Sheet 4 Fig. 4' Fig-575 June 15, 1937. LA (:HAPELLE w 2,083,568

FASTENING INSERT ING MACHINE Filed Dec. 14, 1954 5 Sheets-Sheet 5 Patented June 15, 1937 FASTENING INSERTING MACHINE Fred N. La Chapelle, Beverly, Masa, assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application December 14, 1934, Serial No. 757,504

25 Claim.

This invention relates to fastening inserting machines and is illustrated herein as embodied in a machine particularly adapted to insert fibre staples in the manufacture of boots and shoes.

The fastening together of shoe parts by means of fibre staples of the type disclosed in United States Letters Patent No. 1,957,216, granted May 1, 1934, on an application filed in my name, has proved to be so successful that it has become desirable to develop fastening inserting machines particularly adapted to the insertion of staples of this character. It is, accordingly, an object of the present invention to provide a simple, effective and reliable fastening inserting machine of a character well adapted to be used for the insertion of fibre staples in the manufacture of boots and shoes.

While the machine herein disclosed as embodying the present invention is by no means limited in its utility to the insertion of fibre staples of the type disclosed in said Letters Patent No. 1,957,216, it has been developed with a view particularly to the insertion of such staples and more specifically to the performance of such operations as, for example, securing soles of stitchdown shoes to their uppers.

When inserting staples of the type referred to it has been found necessary to form holes in the work through which the legs of the staples are driven. In lasting stitchdown shoes, for example, such holes extend through the upper and through the sole member. Under some conditions of operation the staples may inadvertently be pulled out of the work thereby permitting the upper to become loosened. Under other conditions the staples hold satisfactorily and are not pulled out of the work even when substantial force is applied thereto. However, in order to insure that under all conditions of operation the 40 staples will not be pulled out of the work, it is desirable to provide means for compressing the work to increase the holding power of the staples and for deflecting or turning the ends of the legs of the staples toward the surface of the work after the staples have been inserted therein. The illustrated machine, therefore, in accordance with one feature of the invention, is provided with a pair of fingers constructed and arranged to compress the work and to engage the ends of the legs 50 of a staple after'the staple has been inserted in the work to turn the ends of the legs toward the surface of the work. In the preferred embodiment of the invention shown in the accompanying drawings, the machine is provided with 55 a pair of awls constructed and arranged to form staple receiving holes in a work piece, a driver for inserting staples in the holes, a work support arranged to clamp the work during the hole forming and staple inserting operations, and a pair of fingers mounted in the support and constructed and arranged to move toward the work to compress the work between the staple legs and to engage the ends of the staple legs to turn said ends toward the work and away from each other after the staple inserting operation has been completed. In the illustrated machine the awls and drivers reciprocate in passages formed in a throat member, these passages being arranged at an angle to each other and intersecting each other at the lower end of the throat, while the fingers are so arranged that they compress the work between the staple legs thus forcing the work against the staple legs with the result thatthe staples hold the work more securely.

In order to insure that the partsof the work piece will not be moved relatively to each other or to the fastening inserting means after the fastening receiving holes have been formed, it has been found desirable to provide an improved work support arranged to clamp the work against the throat of the machine during the hole forming, fastening inserting, and clenching operations. To this end a feature of the invention consists of mechanism in a fastening inserting machine comprising a toggle having a link constructed and arranged to engage a projection on a work support after the work support has been moved manually toward work clamping position. In the illustrated embodiment of the invention a member is secured to the work support and a pair of links forming a toggle arranged to move the support to clamp the work during the staple inserting operation. One of these links, as illustrated, is pivoted to the frame of the machine and the other link is arranged to engage the member secured to the support after the support has been moved toward work clamping position. The toggle is straightened by power means arranged to apply a predetermined clamping pressure to the work during the fastening inserting operation.

With the above and other objects and features in view the invention will now be described with respect to the accompanying drawings which illustrate a preferred embodiment of the invention and pointed out in the accompanying claims.

In the drawings,

Fig. 1 is a view in side'elevation of a machine embodying the present invention;

Fig. 2 is a view in elevation of the upper portion of the left side of the machine, partly in section;

Fig. 3 is a view in elevation of the right side of the machine;

Fig. 4 is a view in front elevation of the head of the machine;

Fig. 5 is a detail view of the mechanism for operating the awls;

Fig. 6 is a detail view of the lower portion of the awl bar and the throat on an enlarged scale;

Fig.7 is a view in front elevation on an enlarged scale of the throat and the work support;

Fig. 8 is a view in cross section taken along the line VIII-VIII of Fig. 7;

Fig. 9 is a detail view in front elevation, partly in section, of the throat and the work support showing the position of the parts at the end of the clenching operation; and

Fig. 10 is a detail view of the lower portion of the throat showing the staple in position to be inserted in the work.

The invention is illustrated herein as embodied in a machine of the type disclosed in United States Letters Patent No. 1,016,930, granted Feb.

13, 1912, on an application filed in the name of William H. Borden, with the wire feeding mechanism modified, if desired, as illustrated in United States Letters Patent No. 1,388,846, granted August 30, 1931, on an application filed in the name of Matthias Brock. The staple inserting mechanism is mounted in a head l2 (Fig. 1) supported on a column l4 and comprises a driver bar I6 carrying a driver l8 actuated in its driving stroke by a spring operated arm 28 (Fig. 4) ful- 5 crumed at 22 upon a bracket 24 carried by the head l2. The staple inserting mechanism, as illustrated, is substantially the same as the mechanism disclosed in said Letters Patent to Borden to which reference may be had for a detailed description of the parts which it is not considered necessary to describe herein.

The illustrated machine is provided with mechanism for forming fastening receiving holes in a work piece into which staples are driven. A bracket 26 (Figs. 1 and 2) is secured to the head l2 by screws 28, 38. The bracket 26 is provided with a channel 32 which forms a guideway for an awl bar 34. A pair of awls 36 are secured to the lower end of the awl bar 34 by means of a clamping screw 38. The channel or guideway 32 is so located that the awl bar 34 moves at a slight angle to the path of movement of the driver bar l6 and, as illustrated, this angle is approximately nine degrees. The awls 36 are arranged to reciprocate in holes or guiding pas- 55 sages 48 (Figs. 2 and 8) formed in a stationary throat or abutment 42. The driver l8 reciprocates in a passage 44 also formed in the throat 42. As shown in Fig. 2 the passage 44 is substantially vertical and the holes 48 are arranged at an angle 60 thereto and intersect the passage 44 at the extreme lower end of the throat. The ends of the holes formed in the work by the awls 36 are in the line of drive of the legs of the staples which are moved down the passage 44 and into the work 65 by the driver 18, as Will later be described.

The awl bar 34 is provided with an enlarged portion 46 (Fig. 2) to which is secured a headed stud 48 carrying a roll 58. A lever 52 made fast to a shaft 54 (Fig. 3) is provided with a forked 70 end which embraces the roll 50. The shaft 54 is mounted in suitable hearings in a bracket 56 secured to the head l2 of the machine by set screws 58 and studs 62. A collar 64 which is arranged to receive one end of a torsion spring 66 is made 7 fast to the shaft 54. The other end of the spring 86 is secured to a member 68 which is rotatably mounted on one end of the shaft 54. The spring 66 is wound up by rotating the member 68, tension on the spring tending to move the lever 52 in a counterclockwise direction, as viewed in Fig. 4. In order to maintain the tension onthe spring 66, a pin 18 which extends through holes formed in the member 68 and the bracket 56 locks the member 68 to the bracket. A lever 14 (Figs. 3 and 5) secured to the other end of the shaft 54 is rotated in a clockwise direction by a lifting cam 12, best shown in Fig. 5. When the cam 12 is rotated the awl bar 34, through the connections above described, is moved upwardly until the end of the lever 14 drops off of the high part I5 of the cam 12. The awl bar 34 is then thrust downwardly by the spring 66, thereby causing the awls 36 to penetrate the work to form a pair of holes for the reception of the legs of a staple 13. Downward movement of the awl bar 34 is limited by an adjustable stop member 16 provided with leather or fibre washers 11 which engage a surface formed on the upper end of the bracket 26. After the fastening receiving holes have been formed the awl bar 34 is returned to the position shown in Fig. 3 by the cam 12.

In order to hold a work piece, for example, a shoe having an upper 18 and a sole member 18 (Fig. 3) mounted on a last 80 in fastening receiving position against the lower end of the nozzle or abutment 42, a work support 82 is provided which is arranged to clamp the work against the abutment 42. Referring now to Fig. 1 it will be noted that the machine is provided with a treadle 84 which is pivoted to the base of the machine. An upwardly extending link 86 is connected to the treadle 84 and to one arm of a lever 88. The other arm of the lever 88 engages the lower end of a work supporting column 90 to the upper end of which is secured the work supporting member 82. The work support 82 is adjustably secured to the upper end of the work supporting column 88 by a block 8| which is provided at its upper face with a dove-tail slot into which fits a dovetail 93 (Fig. 4) forming part of the work support 82. The lower end of the block 9| is provided with a dove tail 85 which fits into a slot formed in the upper end of the column 88. The work support 82 is positioned in a predetermined position relatively to the lower end of the throat 42 and locked in position by means of a pair of clamping screws 81. When the treadle 84 is depressed by the operator, the work supporting member 82 is moved upwardly toward the throat 42 to clamp the work. The machine is also provided with a treadle 92 (Fig. 1) fulcrumed to the base of the machine and provided with an upwardly extending rod 94 which is connected to a suitable clutch mechanism. When the treadle 92 is depressed the clutch will be tripped and the machine started into operation. The mechanism above referred to is described in detail in United States Letters Patent No. 1,291,754, granted January 21, 1919, on an application filed in the name of Matthias Brock.

In order to insure that the work will be firmly clamped during the hole forming and fastening inserting operation it has been found necessary to provide means for automatically moving the work support 82 into position after such movement has been initiated by depression of the manually operated treadle 84. The work supporting column 80 is mounted in bearings formed in a forwardly extending bracket 96 (Fig. 1) secured by suitable studs to the column of the machine. The work supporting post or column 80 is provided with a notched collar 88 which is secured to the post 80 by a pin I02. Mounted in the lower portion of the bracket 86 is a link I04 5 which is pivoted to the bracket by a pin I06. The other end of the link I04 is pivotally secured to a link I08 by a pin N0; the links I04 and'l08 forming a toggle which when straightened operates to move the support 82 as hereinafter described. 10 A third link I I2 is also pivotally connected to the pin H0 and carries a spring pressed plunger II4 which bears against the link I08 normally to maintain the link I08 in the position shown in Fi 1. The other end of the link H2 is secured 16 by a shaft II6 to arms II8 (Figs. 1 and 5) of bell crank levers I20 pivotally secured to the bracket 86 by a shaft I22. The other arm of each bell crank lever I20 is pivotally connected to a link I24. An adjustable collar I26 surrounds the 80 lower portion of the link I24 and the lower end of a spring I28 surrounding the link I 24 bears against the collar I26. The upper end of the spring I28 bears against a collar I30 formed on the end of an arm I30 of a bell crank lever I32. The other arm of the bell crank lever I32 carries a cam roll (not shown) which fits into a cam groove I34 formed in a cam I35. The upper end of the rod I24 passes through the column I and is provided with a threaded portion. A nut 30 I36 is threaded on the rod I24 and by turning the nut I36 tension of the spring I28 may be varied, as desired, to increase or decrease the clamping pressure on the work. By this means a yieldable connection between the bell crank lever I32 and 85 the bell crank lever I20 is provided.

When the machine is put in operation and the work support 82 has been moved upwardly by depression of the treadle 84 the rod I24 will be moved downwardly swinging the bell crank lever 9 arms I I8 in a counterclockwise direction, thereby swinging the link I04 and the link I08 toward the work supporting post 80. The notch 88 formed in the collar 88 is so positioned relatively to the upper end of the link I08 that, unless the work supporting post 80 has been moved upwardly a predetermined distance by the manually operated treadle 84, the end of the link I08 will not engage the notch 88 but will move past the collar 88 without moving the work support 82. If on the other hand, the work support 82 has been moved upwardly by depression of the treadle 84 to clamp the work prior to the fastening inserting operation the end of the link I08 will engage the notch 88 in the collar 88 and will clamp the work against the throat 42 with a predetermined pressure.

The end of the link I08 engages the notch 88 formed in the collar 88 and as the two links I04,

I08 straighten the work support 82 is raised until the work is securely clamped against the throat 42. The springconnection between the bell crank lever I32 and the rod I24 will yield to compensate for variations in the thickness of the work. After the staples have been inserted in the work. the

5 bell crank lever I20 will be moved in a clockwise direction, thereby moving the links I04, I08 toward the left and away from the notch in the collar 88 and permitting the work support 82 to be returned to its original work receiving position.

70 A spring pressed plunger I40 (Fig. l) is slidably mounted in a hole formed in the lower end of the bracket 86. The plunger I40 is normally urged outwardly by a spring I42 and is arranged to engage the link I04 to prevent the link I04 from 75 striking the bracket 86 when the link is returned to the position shown in Fig. 1. The plunger I40 thus acts as a yielding stop for the link I04.

After the awls 36 have formed fastening receiving holes in the work and have been returned to their original positions, a staple is driven into the holes. Although fibre staples have good holding power, it is advisable under some'conditions to turn or to deflect the legs of the staples in order to insure that the staples will not be pulled out oi the work. When fibre staples are bent or deflected, the twists in the paper material from which the staples are formed are displaced relatively to each other and the bent or deflected portions of the staples tend to take a permanent set and to remain in bent or deflected position. This tendency is further increased by the fact that the glue with which the staples are coated softens slightly because of the friction set up between the staples and the work during the driving operation, thereby permitting the twists in the paper material to be more readily displaced. The glue hardcns again after the staples have been deflected which tends further to maintain the staple legs in their bent or deflected position. As shown best in Fig. '8, the rear portion of the work support 82 is provided with an arcuate slot I46 in which is mounted a pair of clenching fingers I48. The clenching fingers I48 are formed on the end of a bell crank lever I48 which is pivotally mounted on a shaft I50 supported in suitable bearings formed in an upwardly extending bracket I52 which is formed at the rear end of the block 8i. By adjusting the support 82 on the block 8i, the slot I46 is positioned properly relatively to the shaft I50. The slot I46 may then be positioned relatively to the driver I8 and the awls 36 by moving the block 8| either forwardly or rearwardly on the end of the work supporting post 80. The fingers I48 are arranged to be moved toward and away from a work piece by connections whiclpwill now be described. Referring now to Fig. 3, it will be noted that the lever I48 on the end of which the fingers I48 are formed is pivotally connected to a link I54 by a pin I56. The other'end of the link I54 is pivotally connected to a clamping collar I58 which is secured to a sliding rod I60 by means of a clamp ing screw I62. A block I64 is pivotally secured to the rod I60 by a set screw I66. The block IE4 is slidably mounted in a slot formed in the lower end of a lever I 68 which is fulcrumed to the head of the machine by a pin I10. The upper end of the lever I68 is provided with a cam roll I 12 which engages a cam surface formed on the rear of the cam member I35. When the machine is placed in operation and after a staple has been driven, the high part I14 of the cam I35 engages the cam roll I12 and moves the lever I68 in a clockwise direction, thus causing the fingers I48 to be moved toward the work. When the ends of the fingers I48 engage the ends of the staple legs, they are deflected away from each other and against the surface of the work, as shown, for example, in Fig. 9. The ends of the fingers I48 first engage the staple legs and turn or deflect them against the surface of the work. The

fingers I48 then engage the work between the staple legs, as shown in Fig. 9, and compress the work. This compresses the sole member 18 and forces the sole member against the staple legs with the result that the staple is held more firmly in the work. In other words, the holding power of the staple is increased first by turning or deflecting the staple legs and, second, by forcing the portion of the work which is between the staple legs against the staple legs thereby increasing the friction between the staple legs and the sole member 19. When the clenching or deflecting operation has been completed, the high part I14 of the cam I35 passes from beneath the cam roll I12 and the parts are returned to the position shown in Fig. 3 by a torsion spring I18.

The present machine is provided with means forfeeding fibre fastening material I80 (Fig. 4)

from a roll I82 to the fastening severing and forming instrument alities of the machine in the manner disclosed in above-mentioned Letters Patent of the United States No. 1,388,846. The feed wheel I84 is operated by lever connections to a cam I88 to feed the fibre fastening material the required distance through a guiding passage formed in a block I88 and through a slot I90 formed in the end of an inside former I92 (Fig. 2). At this time, the inside former I92 is in its forward position to which it has been moved by an arm I94 connected by suitable means to a cam I96. A length of fastening material is then severed from the continuous strip I80 by a severing mechanism of the type disclosed in the Letters Patent mentioned just above. The machine is provided with outside formers (not shown) which are operated to form a staple about the inside former I92. The outside formers are moved downwardly after the fastening material has been severed. After the staple has been completely formed, the inside former is moved rearwardly out of the path of movement of the driver I8, as is usual in machines of this type.

As previously stated, the driver bar I6 is moved toward the work by a spring operated arm 20 which is pivotally mounted in a bracket 24 mounted in the head of the machine. The driver bar I6 is provided with a laterally extending projection 208 which is arranged to engage a cam surface 2I0 formed on the cam member carried by the main cam shaft of the machine. When the cam member 2I2 is rotated, the driver bar is moved upwardly until the high part of the cam surface 2I0 passes from beneath the projection 208. The driver bar I6 is then forced downwardly under the influence of the spring 20, forcing the staple through the passage 44 formed in the throat 42 and into holes formed in the work piece by the awls 36.

The parts of the machine have been described in detail but it is believed to be desirable for a better understanding of the invention to describe briefly the operation of the machine. The present invention is illustrated as embodied in a machine particularly adapted for securing sole members to the uppers of stitchdown shoes. The upper of an assembled stitchdown shoe is tensioned by means of a pair of bench pincers and the upper held under tension by the operator while the shoe is placed in position under the throat or abutment 42. After the shoe has been properly positioned relatively to the throat the treadle 84 of the machine is depressed thereby raising the support 82 and clamping the shoe between the throat 42 and the support 82. The treadle 92 is then depressed which causes the clutch of the machine to be engaged to start the machine into operation by power. The links I04, I08 are straightened and. the upper end of the link I08 engages the notch 99 in the collar 98 thereby causing the support 82 to clamp the shoe firmly against the throat 42. The support 82 is held in clamping position by the links I04, I08 during the hole forming and fastening inserting operations and during the staple clenching operation.

At the beginning of the cycle of operation fibre fastening material I80 is fed forwardly, severed, and formed into a staple. Before the fastening forming operation has been completed the awls 36 are thrust downwardly into the work to form holes to receive the legs of the staple and are then returned to their initial position. After the staple is formed it is forced downwardly through the throat of the machine by the driver I8 which is urged downwardly under the tension of the spring 20. The driver I8 is held against the bar of the driven staple while the fingers I48 of the clenching device are thrust against the legs of the staple to bend them against the surface of the work. In order to insure that the legs of the staple will be guided into the holes formed by the awls 36 a finger 220 projects into the path of movement of the driver. The finger 220 is of a width equal to the distance between the legs of the staple and, accordingly, the legs of the staple are supported on all sides during the driving operation. The finger 220 is pivotally mounted and normally urged into the passage 44 of the throat 42 by means of a spring 222. After the staple legs have been bent or deflected the parts of the machine are returned to their initial positions and the machine is then in readiness to perform another cycle of operations.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a staple inserting machine, means for inserting staples through a work piece, and means constructed and arranged to engage the projecting ends of the legs of the staples to turn the ends of the legs toward the surface of the work after the staples have been completely inserted in the work and forcibly to engage the work between the legs of the staples thereby compressing the work and increasing the holding power of the staples.

2. In a staple inserting machine, means for forming staple receiving holes in a' work piece, means for driving staples through said holes, and means for bending the projecting ends of the legs of said staples away from each other and toward the surface of the work after the operation of the staple driving means has been completed and to compress the work between the staple legs to close the staple receiving holes about the legs of the staples to increase the holding power of the staples.

3. In a machine for inserting staples, means for forming holes in a work piece, means for driving staples through said holes, a work support, and means associated with said work support constructed and arranged to compress the work between the staple legs and to bend the projecting ends of the legs away from each other against the surface of the work after the staples have been completely inserted in the work.

4. In a machine for inserting staples, awls for forming holes in a work piece, a driver for inserting staples in said holes, means for moving the driver toward the work to insert a staple and to hold the driver against the staple after the staple has been inserted, and a clenching member constructed and arranged to compress the portion of the work between the legs of the staple and to bend the ends of the legs in opposite directions away from the bar of the staple and against the surface of the work after the staple has been inserted and while the driver is held against the staple.

5. In a machine for inserting staples, a pair of awls arranged to form pairs of holes in a work piece, a driver, means for forming staples from a length of fastening material, means for moving said driver toward the work to insert a staple in said holes and to holdthe driver against the bar of the staple after the staple has been inserted in the work, a work support, and a clenching member associated with said work support constructed and arranged to engage the work to lo compress the work between the legs of the staple and to bend the legs away from each other and against the surface of the work after the staple has been inserted in the work and while the driver is held against the staple. 16 6. In a machine for inserting staples, awls arranged to form pairs of holes in a work piece, a driver, means for moving the driver toward the work to insert a staple in said holes and to hold the driver against the staple after the staple has 20 been inserted in the work, a work support having a passage therein, and means movable in said passage arranged to move to bend the legs of the staple away from each other and against the surface of the work and to compress the portion of the work between the staple legs after the staple has been inserted and while the driver is held against the staple.

7. In a staple inserting machine, an abutment having a staple guiding passage,-a work support arranged for movement toward said abutment to clamp a work piece against the abutment, means for forming holes in a work piece for receiving the legs of staples, means for inserting staples in said holes, and means arranged for movement to turn the legs of the staples toward the surface of the work piece after the staples have been driven and to engage the work between the legs of the staples thereby compressing the work and forcing the work against the legs of the staples.

8. In a staple inserting machine, means for inserting staples in a work piece, a throat having a passage through which the staples are driven, a

work support constructed and arranged to clamp the work against the throat during the staple inserting operation, and means associated with said work support constructed and arranged to engage the ends of the legs of the staples'to turn the legs toward the surface of the work and to compress the work between the legs of the staples after the staple inserting operation has been completed.

9. A machine for inserting staples having, in combination, means for forming staples, a pair of awls constructed and arranged to form pairs of staple receiving holes in a work piece, a driver for inserting staples in said holes, a work support arranged to clamp the work during the hole forming and staple inserting operations, and means associated with said support constructed and arranged to engage the ends of the legs of the inserted staples to turn the ends of the legs toward the work and to compress the portion of the work between the legs of the staples thereby decreasing the effective diameter of the holes and increasing the holding power of the staples.

10. In a staple inserting work support arranged to clamp the work during the staple inserting operation, and a pair of fingers constructed and arranged to engage the ends of the legs of the staples after the staples have been inserted in the work to turn the ends of the legs of the staples toward the surface of the work, said fingers being arranged also to machine, a driver, a

engage the work between the staple legs to force the work against the staple legs thereby increasing the holding power of the staples.

11. In a staple inserting machine,'means for forming staples from a length of fastening material, a pair of awls constructed and arranged to form pairs of staple receiving holes me. work piece, a driver for inserting staples in said holes, a work support arranged to clamp the work during the hole forming and staple inserting operations, and a pair of fingers mounted in said support and constructed and arranged to engage the ends of the staple legs after the staple inserting operation has been completed to turn said ends toward the work and to force the portion of the work between the legs of the staples against the legs thereby increasing the holding power of the staples.

12. A staple inserting machine having, in combination, a pair of awls constructed and arranged to form staple receiving holes in a work piece, a driver, means for operating said driver to insert staples in said holes, a stationary abutment having a passage through which the staples are driven, a work support arranged to clamp the work against the abutment during the hole forming and staple inserting operations, a pair of fingers associated with said work support, and means constructed and arranged to move said fingers toward the work after the staple inserting operation has been completed to engage the projecting ends of the legs of the inserted staples to turn the ends of the legs toward the surface of the work and to compress the portion of the work between the legs of the staples thereby increasing the holding power of the staples.

13. In a staple inserting machine, means for inserting staples in the work piece, a throat having a passage through which staples are driven, a work support constructed and arranged to clamp the work against the throat during the staple inserting operation, a pair of fingers mounted in said work support, and cam operated means for moving said fingers toward the work after the staple inserting operation has been completed to turn the ends of the legs of the staples toward the surface of the work and to compress the portion of the work between the staple legs thereby forcing the work against the staple legs and increasing the holding power of the staples.

14. In a machine for inserting staples, means for forming holes for the reception of the legs of staples, means for inserting staples in said holes, a throat having a passage for said inserting means and a passage for said hole forming means, said passages being arranged at an angle to each other and intersecting each other at the lower end of the throat, and means constructed and arranged to engage the projecting ends of the staple legs to turn the ends of the legs toward the surface of the work.

15. In a machine for inserting staples, awls for forming holes in a work piece for the reception of the legs of staples, a driver for inserting staples in said holes, a throat having a driver passage and a passage for each of said awls, said passages being arranged at an angle to each other and intersecting each other at the lower end of said throat, and means constructed and arranged to engage the projecting ends of the staple legs after the staples have been completely inserted in the work to turn the ends of the legs toward the surface of the work.

16. In a. machine for inserting staples, awls for forming'holes in a work piece for the reception of the legs of staples, a driver for inserting staples in said holes, a throat having a driver passage and a passage for each of said awls, said driver and awl passages being arranged at an angle to each other and intersecting each other at the lower end of said throat, a work support having a passage therein, and means movable in said passage arranged to bend the legs of the staples against the surface of the work after the staples have been inserted and while the driver is held against the staples.

17. In a machine for inserting staples, awls for forming holes in a work piece for the reception of the legs of staples, a driver for inserting staples in said holes, a throat having a driver passage and a passage for each of said awls, said driver and awl passages being arranged at an angle to each other and intersecting each other at th lower end of said throat, a work support arranged for movement toward said throat to clamp a work piece against said throat, and

means arranged for movement to turn the legs of the staples toward the surface of the work piece after the staples have been driven.

18. In a machine for inserting staples, awls for forming holes in a work piece for the reception of the legs of staples, a driver for inserting staples in said holes, a throat having a driver passage and a passage for each of said awls, said driver and awl passages being arranged at an angle to each other and intersecting each other at the lower end of said throat, a work support arranged to clamp the work against the throat during the hole forming and staple inserting operations, a pair of fingers associated with said work support, and means constructed and arranged to move said fingers toward the work to engage the projecting ends of the legs of the inserted staples to turn the ends of the legs toward the surface of the work after the staple inserting operation has been completed.

19. In a machine for inserting fastenings, fastening inserting mechanism, a work support movable from a work receiving position to a work clamping position, manually operated means arranged to move the support toward work clamping position, a projection on the work support, a toggle having a link constructed and arranged to engage the projection after the support has been moved manually toward work clamping position, and power operated means for straightening the toggle to apply clamping pressure to the work.

20. In a machine for inserting fastenings, fastening inserting mechanism, a work support movable from work receiving position to work clamping position, manually operated means constructed and arranged to move the work support to work clamping position, a member secured to the work support, a toggle having a link arranged to engage said member only after the work support has been moved toward clamping position by the manually operated means, and power operated means arranged to straighten the toggle to move the support to apply a predetermined clamping pressure to the work prior to the fastening inserting operation.

21. In a machine for inserting staples, means for inserting staples in a work piece, a throat through which the staples are driven into the work, a work support arranged to clamp the work against said throat to prevent displacement of the work during the staple inserting operation, manually operated means for moving the work support toward work clamping position, a member secured to said support, a pair of links forming a toggle, one of said links being pivoted to the frame of the machine and the other link being arranged to engage the member secured to the support after the support has been moved toward work clamping position, and power operated means constructed and arranged to straighten said toggle to move the support to apply a predetermined clamping pressure to the work.

22. In a machine for inserting staples, means for forming holes in a work piece to receive the legs of the staples, means for inserting staples in said holes, a throat through which the staples are driven, a work support arranged to clamp the work piece against said throat to prevent displacement of the work during the hole forming and staple inserting operations, manually operated means for moving the support toward work clamping position, a member secured to said support, a link pivotally secured to the frame of the machine, a second link secured to the other end of said first-mentioned link, said second-mentioned link being so arranged that engagement of said second-mentioned link with the member secured to said support is prevented until the work support has been moved manually a predetermined distance toward said support, and power operated means for operating said links to apply a clamping pressure to the work.

23. In a machine for forming and inserting fibre staples, means for forming fibre staples from a length of fibre fastening material, a pair of awls for forming a pair of holes for the reception of the legs of fibre staples, a driver for inserting the fibre staples in said holes, a throat having passages arranged at an angle to each other in which the awls and the driver are reciprocated, and a work support constructed and arranged to clamp the work against the throat during the hole forming and staple driving operations.

24. In a machine for forming and inserting fibre staples, means for severing fibre fastening material, means for feeding the fibre fastening material to the severing means, means for forming a fibre staple from said length of fastening material, awls for forming holes in the work to receive the legs of said fibre staple, a driver for inserting the staple in said holes, a throat through which the staple is driven, a work support arranged to clamp the work against the throat during the hole forming and staple inserting operations, and means associated with said work support movable to compress the portion of the work between the legs of the staple to force the work about the staple legs and to engage the projecting ends of the staple legs after the staple has been driven to turn the staple legs against the surface of the work.

25. In a machine for forming and inserting fibre staples, means for forming fibre staples from a length of fibre fastening material, awls for forming a pair of holes in the Work to receive the legs of a fibre staple, a driver for inserting the legs of the fibre staple in said holes, a throat having awl and driver passages intersecting each other at the lower end of the throat, a work support arranged to clamp the work against the lower end of the throat during the hole forming and staple inserting operations, and a pair of fingers associated with said support arranged to engage the projecting ends of the staple legs after the fibre staple has been completely inserted in the work to turn the ends of the legs against the surface of the work.

FRED N. LA CHAPELLE. 

